Cylinder body for vacuum pump

Abstract

The utility model provides a cylinder body for a vacuum pump and relates to the technical field of vacuum pumps, the cylinder body for the vacuum pump comprises a cylinder barrel, the cylinder barrel is provided with a first barrel shell and a second barrel shell, the first barrel shell and the second barrel shell are spliced together, the cylinder barrel is divided into the first barrel shell and the second barrel shell, and the first barrel shell and the second barrel shell are simple in structure and convenient to produce, machine and maintain; the production efficiency is improved, any one of the first barrel shell and the second barrel shell can be independently replaced when damaged, and the later maintenance cost is reduced; after the piston is installed in the cylinder barrel, the piston can slide in the cylinder barrel, the cross section of the first barrel shell and the cross section of the second barrel shell are both in a major arc shape, the first barrel shell and the second barrel shell jointly limit the angle of the piston, the piston can be prevented from rotating in the cylinder barrel, and the sealing reliability between the piston and the cylinder barrel is guaranteed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of vacuum pumps, and more particularly relates to a cylinder for a vacuum pump. BACKGROUND

[0002] A vacuum pump is a device used to remove gas molecules from an enclosed space, thereby creating a vacuum inside. They are widely used in various industrial and scientific fields, including semiconductor manufacturing, food processing, medical equipment, chemical experiments, etc.

[0003] The selection and use of a vacuum pump need to be evaluated in detail according to the specific application requirements to ensure its efficient and reliable operation. Reciprocating vacuum pump: extracts gas through the reciprocating motion of the piston.

[0004] The existing cylinder for a vacuum pump mainly has the following disadvantages: the cylinder adopts an integral structure, the structure is complex, and the processing difficulty is large; the piston reciprocates in the cylinder, and during operation, the cylinder and the piston will be worn and damaged to different degrees; after the cylinder is worn, the entire cylinder needs to be replaced, the cylinder is large in size and heavy in weight, thereby increasing the maintenance cost and workload in the later period. SUMMARY

[0005] The present application aims to make up for the shortcomings of the prior art, and provides a cylinder for a vacuum pump, and the technical scheme adopted by the present application is as follows:

[0006] A cylinder for a vacuum pump comprises a cylinder barrel, the cylinder barrel is provided with a first barrel shell and a second barrel shell, the first barrel shell and the second barrel shell are spliced together; the cross sections of the first barrel shell and the second barrel shell are both arc-shaped.

[0007] Preferably, a boundary surface is arranged between the first barrel shell and the second barrel shell, and the first barrel shell and the second barrel shell are symmetrically arranged about the boundary surface.

[0008] Preferably, the first barrel shell and the second barrel shell are both made of a nickel-based alloy material.

[0009] Preferably, the cylinder for a vacuum pump further comprises a reinforcing frame, the reinforcing frame is arranged outside the cylinder barrel; the reinforcing frame is provided with a reinforcing sleeve, and the reinforcing sleeve is sleeved outside the cylinder barrel.

[0010] Preferably, the reinforcing frame is further provided with a positioning plate, the positioning plate is perpendicular to the reinforcing sleeve, and the positioning plate is arranged outside the joint between the first barrel shell and the second barrel shell.

[0011] Preferably, the cylinder for a vacuum pump is further provided with an output pipeline, and the output pipeline is arranged on the side surface of the cylinder barrel.

[0012] Preferably, the output pipeline is provided with an inner tube and a support sleeve, the inner tube is arranged inside the support sleeve; and the inner tube is arranged between the first barrel shell and the second barrel shell and is in communication with the inside of the cylinder barrel.

[0013] Preferably, the cylinder body for vacuum pump is further provided with a first support frame and a second support frame, the first support frame and the second support frame are respectively arranged at two ends of the cylinder barrel; the first support frame and the second support frame are both provided with a connecting lug, and the connecting lug is provided with a connecting hole.

[0014] Preferably, the cylinder body for vacuum pump is further provided with a reinforcing rib, and the reinforcing rib is sleeved outside the cylinder barrel.

[0015] The utility model discloses the following advantages:

[0016] The cylinder barrel is divided into a first cylinder shell and a second cylinder shell, the first cylinder shell and the second cylinder shell are simple in structure, convenient for production and maintenance, improve production efficiency, and any one of the first cylinder shell and the second cylinder shell can be replaced independently, thereby reducing the maintenance cost in the later period; after the piston is installed into the cylinder barrel, the piston can slide in the cylinder barrel, the cross section of the first cylinder shell and the second cylinder shell is arc-shaped, and the first cylinder shell and the second cylinder shell jointly limit the angle of the piston, so that the piston can be prevented from rotating in the cylinder barrel, and the reliability of the sealing between the piston and the cylinder barrel is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, without creative labor, other drawings can also be obtained from these drawings.

[0018] Fig. 1 It is a perspective view of the cylinder body for vacuum pump;

[0019] Fig. 2 It is a right view of the cylinder body for vacuum pump;

[0020] Fig. 3 It is a front view of the cylinder body for vacuum pump.

[0021] Explanation of symbols in the drawing:

[0022] 1 is the cylinder barrel, 11 is the first cylinder shell, and 12 is the second cylinder shell;

[0023] 2 is the reinforcing frame, 21 is the reinforcing sleeve, and 22 is the positioning plate;

[0024] 3 is the output pipeline, 31 is the inner pipe, and 32 is the support sleeve;

[0025] 4 is the first support frame, 41 is the first connecting lug, and 411 is the first connecting hole;

[0026] 5 is the second support frame, 51 is the second connecting lug, and 511 is the second connecting hole;

[0027] 6 is a reinforcing rib, 61 is the first reinforcing rib, and 62 is the second reinforcing rib. Detailed Implementation

[0028] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0029] The cylinder body for the vacuum pump provided in this application will now be described with reference to the embodiments.

[0030] Example

[0031] like Figs. 1 to 3 As shown, a cylinder body for a vacuum pump includes a cylinder barrel 1, which has a first shell 11 and a second shell 12, which are joined together. The cross-sections of the first shell 11 and the second shell 12 are both arc-shaped. In this embodiment, the first shell 11 and the second shell 12 are joined together by welding.

[0032] The cylinder 1 is disassembled into a first shell 11 and a second shell 12. The first shell 11 and the second shell 12 have simple structures, which facilitate production, processing and maintenance, and improve production efficiency. If either the first shell 11 or the second shell 12 is damaged, it can be replaced independently, reducing the later maintenance cost. After the piston is installed in the cylinder 1, the piston can slide in the cylinder 1. The cross-sections of the first shell 11 and the second shell 12 are both arc-shaped. The first shell 11 and the second shell 12 together restrict the angle of the piston, which can prevent the piston from rotating in the cylinder 1 and ensure the reliability of the seal between the piston and the cylinder 1.

[0033] An interface is provided between the first shell 11 and the second shell 12, and the first shell 11 and the second shell 12 are symmetrically arranged about the interface.

[0034] In this embodiment, both the first shell 11 and the second shell 12 are made of nickel-based alloy material, which fully utilizes the wear resistance, corrosion resistance and high temperature resistance of nickel-based alloy material, thereby extending the service life of the cylinder 1. In this embodiment, both the first shell 11 and the second shell 12 are made of C276 Hastelloy alloy, which can extend the service life of the cylinder 1 by 3 to 8 times.

[0035] In order to reduce the production cost of the first shell 11 and the second shell 12, both the first shell 11 and the second shell 12 are made of composite plates, and the inner layer of the first shell 11 and the second shell 12 is made of nickel-based alloy material.

[0036] The cylinder body for vacuum pump further comprises a reinforcing frame 2 arranged outside the cylinder barrel 1, and the reinforcing frame 2 is provided with a reinforcing sleeve 21 arranged outside the cylinder barrel 1. The reinforcing sleeve 21 is used to increase the structural stability of the cylinder barrel 1. In the embodiment, the reinforcing sleeve 21 has a rectangular cross section.

[0037] The reinforcing frame 2 is further provided with a positioning plate 22 which is perpendicular to the reinforcing sleeve 21 and arranged outside the joint between the first cylinder shell 11 and the second cylinder shell 12, thereby further improving the sealing performance of the inside of the cylinder barrel 1.

[0038] The cylinder body for vacuum pump is further provided with an output pipeline 3 arranged on the side of the cylinder barrel 1, which is convenient for subsequent connection.

[0039] The output pipeline 3 is provided with an inner tube 31 and a support sleeve 32, and the inner tube 31 is arranged inside the support sleeve 32. The inner tube 31 is arranged between the first cylinder shell 11 and the second cylinder shell 12 and is connected with the inside of the cylinder barrel 1.

[0040] The cylinder body for vacuum pump is further provided with a first support frame 4 and a second support frame 5 arranged at two ends of the cylinder barrel 1 respectively. The first support frame 4 is provided with a first connecting lug 41 provided with a first connecting hole 411, and the second support frame 5 is provided with a second connecting lug 51 provided with a second connecting hole 511. The first connecting hole 411 and the second connecting hole 511 are used for fixing the cylinder body, and a connecting bolt is used to pass through the first connecting hole 411 and the second connecting hole 511 during use.

[0041] The cylinder body for vacuum pump is further provided with a reinforcing rib 6 arranged outside the cylinder barrel 1, which is used to further increase the structural stability of the cylinder barrel 1. In the embodiment, the reinforcing rib 6 is provided with a first reinforcing rib 61 and a second reinforcing rib 62.

[0042] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cylinder for a vacuum pump comprising a cylinder barrel, characterized in that: The cylinder is provided with a first cylinder shell and a second cylinder shell, which are spliced together; the cross sections of the first cylinder shell and the second cylinder shell are both arcuate.

2. The cylinder for a vacuum pump according to claim 1, characterized in that: The first cylinder shell and the second cylinder shell are provided with a boundary surface, and the first cylinder shell and the second cylinder shell are symmetrically arranged about the boundary surface.

3. The cylinder for a vacuum pump according to claim 2, characterized in that: The first cylinder shell and the second cylinder shell are both made of nickel-based alloy material.

4. The cylinder for a vacuum pump according to any one of claims 1 to 3, characterized in that: A reinforcing frame is further included, which is arranged outside the cylinder; the reinforcing frame is provided with a reinforcing sleeve, which is sleeved outside the cylinder.

5. The cylinder for a vacuum pump according to claim 4, characterized in that: The reinforcing frame is further provided with a positioning plate, which is perpendicularly intersected with the reinforcing sleeve, and the positioning plate is arranged outside the joint between the first cylinder shell and the second cylinder.

6. The cylinder for a vacuum pump according to any one of claims 1 to 3, characterized in that: An output pipeline is further provided, which is arranged on the side of the cylinder.

7. The cylinder for a vacuum pump according to claim 6, characterized in that: The output pipeline is provided with an inner tube and a support sleeve, and the inner tube is arranged inside the support sleeve; the inner tube is arranged between the first cylinder shell and the second cylinder shell and is connected with the inside of the cylinder.

8. The cylinder for a vacuum pump according to any one of claims 1 to 3, characterized in that: First and second support frames are further provided, which are respectively arranged at the two ends of the cylinder; the first and second support frames are both provided with connecting ears, which are provided with connecting holes.

9. The cylinder for a vacuum pump according to any one of claims 1 to 3, characterized in that: Reinforcing ribs are further provided, which are sleeved outside the cylinder.

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